Year 1 Ten More, Ten Less (and One More, One Less) Worksheet — Getting Started — Answers
Answer sheet with worked solutions for the Year 1 place value worksheet.
Success TutoringWorksheetsAnswer sheetYear 1 · Mathematics · Place ValueYear 1 Ten More, Ten Less (and One More, One Less) Worksheet — Getting Started — Answers
Use place value: ten more or ten less changes the tens digit.
1.One more than 13 is (answer space).
Answer: 14
- 13 + 1 = 14
2.One more than 17 is (answer space).
Answer: 18
- 17 + 1 = 18
3.One more than 0 is (answer space).
Answer: 1
- 0 + 1 = 1
4.One less than 3 is (answer space).
Answer: 2
- 3 − 1 = 2
5.One less than 1 is (answer space).
Answer: 0
- 1 − 1 = 0
6.One more than 11 is (answer space).
Answer: 12
- 11 + 1 = 12
7.One less than 5 is (answer space).
Answer: 4
- 5 − 1 = 4
8.One more than 3 is (answer space).
Answer: 4
- 3 + 1 = 4
9.One more than 12 is (answer space).
Answer: 13
- 12 + 1 = 13
10.One less than 13 is (answer space).
Answer: 12
- 13 − 1 = 12
11.One less than 10 is (answer space).
Answer: 9
- 10 − 1 = 9
12.One less than 18 is (answer space).
Answer: 17
- 18 − 1 = 17
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.